题目：Quantum Speed Limits, Shortcuts and Quantum Chaos in Non-Hermitian Systems

报告人：Adolfo del Campo    (University of Luxembourg & DIPC)

邀请人：Gentaro Watanabe

时间：15:00, September 25 (Thursday)

地点：Room 324, No. 8 Hainayuan Building

Non-Hermitian quantum dynamics has emerged as a powerful framework for exploring open and effectively dissipative quantum systems, offering new perspectives on speed limits, adiabaticity, and spectral properties. In this talk, we unify recent advances across three key areas of non-Hermitian physics. First, we present a geometrical formulation of quantum speed limits for finite-rank density operators, revealing how the interplay between dissipation and coherence bounds the dynamical evolution of mixed states. We then explore the slow approach to adiabaticity in many-body non-Hermitian systems through the lens of the Hatano-Nelson model and introduce a shortcut to adiabaticity. Finally, we show how spectral filtering, ubiquitous in the analysis of complex many-body systems, is related to non-Hermitian Hamiltonian deformations, which can render the spectral form factor self-averaging.

References

N. Hörnedal, O. A. Prosniak, A. del Campo, A. Chenu, Quantum 9, 1729 (2025). 

L. Dupays, A. del Campo, B. Dora, Phys. Rev. B 111, 045130 (2025). 

A. S. Matsoukas-Roubeas, M. Beau, L. F. Santos, A. del Campo, Phys. Rev. A 108, 062201 (2023). 

A. S. Matsoukas-Roubeas, F. Roccati, J. Cornelius, Z. Xu, A. Chenu, A. del Campo, J. High Energ. Phys. 2023, 60 (2023).

Short Biography: 

Adolfo del Campo is a professor of theoretical physics at the University of Luxembourg. He is notable as one of the pioneers of shortcuts to adiabaticity in quantum control. He was elected a Fellow of the American Physical Society in 2023 in the Division of Quantum Information. Before moving to Luxembourg, he was a J. Robert Oppenheimer Fellow at Los Alamos National Laboratory, an associate professor at the University of Massachusetts Boston, and a distinguished research professor at the Donostia International Physics Center. During his career, del Campo has published over 100 peer-reviewed papers, with seminal contributions to shortcuts to adiabaticity in quantum control, quantum speed limits, critical phenomena, and quantum optimization algorithms.